Automobile compressor piston

ABSTRACT

A piston, used in a vehicle air-compressor or a vehicle suspension system, can be dismantled by a dismantling tool so that cost for a repair is reduced while components are replaced instead of the whole piston.

FIELD OF THE INVENTION

The present invention relates to a piston; more particularly, relates todismantling and adjusting the piston.

DESCRIPTION OF THE RELATED ARTS

A piston 7 of a prior art for an air compressor is disclosed in Taiwan,as shown in FIG. 4, where the air compressor comprises a base seat, amotor fixed to the base seat, a cylinder liner on the base seat fordeposing the piston 7, and a weight block with an cam jointed to a rod72 of the piston 7 directly or indirectly driven by the motor. The priorart is characterized in that the piston 7 comprises a piston head 71 anda rod 72 extended down from the bottom of the piston head 71, where therod 72 comprises a shaft hole 73 at the end to joint to the cam of theweight block. On the side surface around the piston head is deposed aring notch 74 concaving toward the axle center, where a piston ring 8 isslipped in. A plurality of gas holes 75 are deposed near thecircumference on the top surface of the piston head 71; and the gas hole75 is led to the ring notch 74.

Although air can be exhausted with the prior art, the piston within isformed into a whole one; so, when a replacement is required out of abreakdown, the whole piston is replaced as a waste of cost. So, theprior art does not fulfill users' requests on actual use.

SUMMARY OF THE INVENTION

Therefore, the main purpose of the present invention is to dismantlingand adjusting a piston with cost reduced.

To achieve the above purpose, the present invention is an automobilecompressor piston, which comprises a packing, a piston ring, aconnecting rod, a bearing and an cam; and which can be dismantled by adismantling tool. Accordingly, a novel automobile compressor piston isobtained.

BRIEF DESCRIPTIONS OF THE DRAWINGS

The present invention will be better understood from the followingdetailed description of the preferred embodiment according to thepresent invention, taken in conjunction with the accompanying drawings,in which

FIG. 1 is a perspective view of a preferred embodiment according to thepresent invention;

FIG. 2 is an explosive view of the preferred embodiment according to thepresent invention;

FIG. 3 is a view showing a status of use of the preferred embodimentaccording to the present invention; and

FIG. 4 is a perspective view of a prior art.

DESCRIPTION OF THE PREFERRED EMBODIMENT

The following description of the preferred embodiment is provided tounderstand the features and the structures of the present invention.

Please refer to FIG. 1, which is a perspective view of a preferredembodiment according to the present invention. As shown in the figure,the present invention is an automobile compressor piston 1, comprising apacking 111, a piston ring 12, a connecting rod 13, a bearing 14 and ancam 15, constructed with the above components one after one.

Please refer to FIG. 2, which is an explosive view of the preferredembodiment according to the present invention. As shown in the figure,the present invention is an automobile compressor piston 1, comprising apacking 11, a piston ring 12, a connecting rod 13, a bearing 14 and ancam 15. The packing 11 comprises two fixing holes 111,112 at a side; thepacking 11 can be locked on top of the connecting rod with the fixingholes 111,112; and, the packing 11 can be dismentled with the fixingholes 111,112 by using a dismantling tool 16 having two correspondingconcave parts 161,162 on the tool 6.

The piston ring 12 is located between the packing 11 and the connectingrod 13 to prevent friction between the packing 11 and the connecting rod13 or between two components when used in an air compressor, so that theconnecting rod 13 or the components will not be abraded or run unevenlyto shorten lifetime. Besides, the piston ring 12 is able to accumulateair.

The connecting rod 13 is the main body of the piston 1, comprising alocking hole 131 and a suction valve 132 on top; a thread part 133 onside surface of the top for locking the packing 11 on top; two grooves134 at center; and, a round hole 135 at bottom.

The bearing 14 is deposed in the round hole 135 at the bottom of theconnecting rod 13, comprising a shaft hole 141 at center.

The cam 15 comprises a camshaft 151 to insert into the shaft hole 141 ofthe bearing 14; an eccentric hole 152 on the opposite side surface tothe camshaft 151; and a locking hole 153 on a side surface to theeccentric hole 152. The cam 15 comprises a sector shape, which is aweight block to drive the piston 1 to move upward and downward by usinga motor (not shown in the figure).

Hence, the piston 1 can be dismentled and adjusted, where, on using,components can be replaced to reduce cost without replacing the wholeset.

Please refer to FIG. 3, which is a view showing a status of use of thepreferred embodiment according to the present invention. As shown in thefigure, a piston 1 according to the present invention can be used in avehicle air-compressor or a vehicle suspension system, which shown inthe figure is a vehicle air-compressor. The air-compressor consists of amotor 2, a main seat 3, a filter 4, a piston cylinder 5 and a cylinderhead 6. The piston 1 according to the present invention is deposed inthe main seat 8. An cam 15 at an end of the piston 1 is connected withthe motor 2, where a shaft 21 of the motor 2 is inserted into aneccentric hole 152 of the cam 15 to be fixed with a screw locked into alocking hole 153. Another end of the piston 1 is inserted into thepiston cylinder 5. Air is entered into the piston cylinder 5 of thevehicle air-compressor from the suction valve 132 through the filter 4to drive the piston 1 to move upward and downward by using the motor.Air is then pumped in and is transferred to an exhaust valve 61 of thecylinder head 6 to be exhausted.

To sum up, the present invention is an automobile compressor piston,where a dismantling tool can be used for dismantling so that componentsof the piston can be replaced without replacing the whole set and socost can be reduced.

The preferred embodiment herein disclosed is not intended tounnecessarily limit the scope of the invention. Therefore, simplemodifications or variations belonging to the equivalent of the scope ofthe claims and the instructions disclosed herein for a patent are allwithin the scope of the present invention.

1. An automobile compressor piston, comprising: (a) a packing comprisingtwo fixing holes at a side, said packing being dismentled by said fixingholes; (b) a piston ring to prevent from friction and to accumulate air;(c) a connecting rod comprising a locking hole and a suction valve ontop, a thread around said top to slip said piston ring to be locked bysaid packing, two grooves at center, and a round hole at bottom; (d) abearing deposed in a round hole at bottom of said connecting rod, saidbearing comprising a shaft hole at center; (e) an cam comprising acamshaft and an eccentric hole, said cam a weight block with a sectorshape, said cam comprising a locking hole on a side surface to saideccentric hole; and (f) a dismantling tool with two concave part todismantle said packing.
 2. The piston according to claim 1, wherein saidpiston is connected to a DC (direct current) motor.
 3. The pistonaccording to claim 2, wherein said motor comprises 12 voltages.